Note 2 - Significant Accounting Policies - Intangible Assets (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016
Other intangibles, gross	$ 729,685	$ 729,685
Accumulated amortization	710,463	708,845
Other intangibles, net	19,222	20,840
Other intangibles, accumulated amortization	710,463	708,845
OTHER INTANGIBLES, net of accumulated amortization of $710,000 and $708,000 as of December 31, 2017 and 2016, respectively	19,222	20,840
Trademarks and Copyrights [Member]
Other intangibles, gross	554,369	554,369
Accumulated amortization	545,897	545,279
Other intangibles, net	8,472	9,090
Other intangibles, accumulated amortization	545,897	545,279
OTHER INTANGIBLES, net of accumulated amortization of $710,000 and $708,000 as of December 31, 2017 and 2016, respectively	8,472	9,090
Noncompete Agreements [Member]
Other intangibles, gross	175,316	175,316
Accumulated amortization	164,566	163,566
Other intangibles, net	10,750	11,750
Other intangibles, accumulated amortization	164,566	163,566
OTHER INTANGIBLES, net of accumulated amortization of $710,000 and $708,000 as of December 31, 2017 and 2016, respectively	$ 10,750	$ 11,750